The KYN28A-12 indoor metal-enclosed switchgear is a complete power distribution system designed for three-phase AC 50Hz, rated voltage 12KV, and working current up to 4000A. It is suitable for power plants, substation, industrial and mining enterprises, etc., for receiving and distributing electrical energy, providing control, protection, and monitoring of the circuit, and can also be used in frequently operated locations.

The product consists of two parts: the cabinet and the retractable section (handcart). The cabinet structure is made of a combination of galvanized aluminum sheets or zinc-plated sheets, divided by metal partitions into the breaker room (handcart room), main busbar room, cable room, and relay instrument room. All metal structures are reliably grounded, and each compartment of the main circuit system is equipped with a pressure relief channel.